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ALTO Uber no output
Hi
I'm trying to repair an Alto Über PA which has no audio output.
Having disassembled it I can see that there is no V+ on any of the op-amps (TLV6002), so I'm suspecting a power issue.
The board gets power from a separate SMPS and a Battery - both check out OK, and the Battery level LEDs do their usual little animation during switch on, so power to the MCU is ok.
+12V is making it to the amp (TPA3112)
I'm having a hard time tracing the V+ signal as it seems to be mostly on an inner layer.
Anyone got a schematic, or experience with this little amp?
*edit* Spelling and grammar.
I'm trying to repair an Alto Über PA which has no audio output.
Having disassembled it I can see that there is no V+ on any of the op-amps (TLV6002), so I'm suspecting a power issue.
The board gets power from a separate SMPS and a Battery - both check out OK, and the Battery level LEDs do their usual little animation during switch on, so power to the MCU is ok.
+12V is making it to the amp (TPA3112)
I'm having a hard time tracing the V+ signal as it seems to be mostly on an inner layer.
Anyone got a schematic, or experience with this little amp?
*edit* Spelling and grammar.
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